期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 887, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2021.161362
关键词
Asymmetric supercapacitor; Conducting polymer; All-gel-state; Hydrogel electrode
资金
- Exploratory Challenging Research of Japan Society for the Promotion of Science (Japan) [19K21923]
- National Natural Science Foundation of China (China) [51763008]
- Guangxi Natural Science Foundation (China) [2019GXNSFAA245028, 2018GXNSFAA281241]
The flexible supercapacitor is a promising energy storage device with high energy density, stable energy supply, interchangeable electrodes, and robust flexibility, demonstrating excellent electrochemical and mechanical properties.
Flexible supercapacitors are promising flexible energy storage devices. However, manufacturing devices with high energy density, stable energy supply under harsh deformation, and more efficient modular application is still a challenge. Here, an all-gel-state integrated asymmetric flexible supercapacitor based on poly (3,4-ethylenedioxythiophene): polystyrene sulfonate (PEDOT:PSS) and polypyrrole (PPy) composite hydrogel electrodes with an interchangeable positive and negative electrode was fabricated. The device has robust flexibility and mechanical durability, with an elongation at break of 286% at a tensile strength of 22.3 MPa and a capacitance retention rate of 98% after 1000 bending cycles, as well as fascinating electrochemical properties, with an energy density of 397.99 mu Wh cm(-3) and a capacitance retention rate of 88.1% for 10,000 charges/discharge cycles. Moreover, the positive and negative electrodes of this asymmetric device can be used interchangeably, and it can power the light-emitting diodes (LEDs) without distinguishing between positive and negative. This design concept will perhaps open a new trend in the design of high-energy-density flexible energy storage devices. (C) 2021 Published by Elsevier B.V.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据